The security of operating system is an important aspect of information security.

操作系统安全是信息安全的一个重要方向。

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With function of protection ring and security kernel, a novel model for enhancing security of operating system is proposed.

利用保护环和安全内核的功能，提出了一种新的增强操作系统安全性的模型。

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Subscribe to and read security bulletins to learn of threats to your operating system and application software, and determine whether each threat endangers your specific configuration.

订阅和阅读安全公告，了解您的操作系统和应用程序软件面临的威胁，判断这些问题是否会危害您的配置。

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The final myth is the one that leads to the most pronounced false sense of security - that my make of computer or operating system is not vulnerable to security problems.

BBC: Computer security words in a Scrabble game

On Tuesday the French firm Vupen, whose researchers develop software hacking techniques and sell them to government agency customers, announced that it had already developed an exploit that could take over a Window 8 machine running Internet Explorer 10, in spite of the many significant security upgrades Microsoft built into the latest version of its operating system.

FORBES: Government-Funded Hackers Say They've Already Defeated Windows 8's New Security Measures

The company can apply its own security standards across each platform, regardless of the operating system.

WSJ: Danger-to-Go: Mobile Devices in the Workplace